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1. WO2012068265 - SYSTEM AND METHOD FOR CONTROLLING A TRANSMISSION OF A HUMAN-POWERED VEHICLE

Publication Number WO/2012/068265
Publication Date 24.05.2012
International Application No. PCT/US2011/061016
International Filing Date 16.11.2011
IPC
B62M 9/123 2010.01
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
9Transmissions characterised by use of an endless chain, belt, or the like
04of changeable ratio
06using a single chain, belt, or the like
10involving different-sized wheels selectively engaged by the chain, belt, or the like
12the chain, belt, or the like being laterally shiftable
121Rear derailleurs
123changing gears automatically
CPC
B62M 25/00
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR ; SINGLE-TRACK; CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
25Actuators for gearing speed-change mechanisms specially adapted for cycles
B62M 25/08
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR ; SINGLE-TRACK; CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
25Actuators for gearing speed-change mechanisms specially adapted for cycles
08with electrical or fluid transmitting systems
B62M 9/123
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR ; SINGLE-TRACK; CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
9Transmissions characterised by use of an endless chain, belt, or the like
04of changeable ratio
06using a single chain, belt, or the like
10involving different-sized wheels, ; e.g. rear sprocket chain wheels; selectively engaged by the chain, belt, or the like
12the chain, belt, or the like being laterally shiftable ; , e.g. using a rear derailleur
121Rear derailleurs
123changing gears automatically
B62M 9/133
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MRIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR ; SINGLE-TRACK; CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
9Transmissions characterised by use of an endless chain, belt, or the like
04of changeable ratio
06using a single chain, belt, or the like
10involving different-sized wheels, ; e.g. rear sprocket chain wheels; selectively engaged by the chain, belt, or the like
12the chain, belt, or the like being laterally shiftable ; , e.g. using a rear derailleur
131Front derailleurs
133changing gears automatically
Applicants
  • SIMPSON, Sean, Michael [US]/[US]
  • SIMPSON, Mark, Wayne [US]/[US]
  • CZOYKOWSKI, John, Richard [US]/[US]
Inventors
  • SIMPSON, Sean, Michael
  • SIMPSON, Mark, Wayne
  • CZOYKOWSKI, John, Richard
Agents
  • YEE, James, R.
Priority Data
61/415,25318.11.2010US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SYSTEM AND METHOD FOR CONTROLLING A TRANSMISSION OF A HUMAN-POWERED VEHICLE
(FR) SYSTÈME ET PROCÉDÉ PERMETTANT DE CONTRÔLER LA TRANSMISSION D'UN VÉHICULE À PROPULSION HUMAINE
Abstract
(EN)
A method and system for computer-controlled shifting of a human-powered vehicle, such as a bicycle, is provided. Unlike previous automatic shifting systems that rely solely on a combination of hub speed and/or crank speed, this system creates a virtual image of the user's entire operating environment using a combination of hub speed, crank speed, inclination, and acceleration measurements. With this information, the system is able to understand the output torque and speed, and through control of the transmission, change the "gear ratio" to achieve a more desired operating condition based on the individual user's preferences. In addition, this system is designed to also work with a continuously variable transmission to avoid the shortfall of the state of the art systems, which can only get within a wide range of the optimal cadence because of the fixed ratios of a derailleur system. (Hereafter, the term "gear ratio" will be used for both actual gear ratios on derailleur-based systems and artificial gear ratios when used with CVTs)
(FR)
La présente invention a trait à un procédé et à un système pour le changement de vitesse commandé par ordinateur d'un véhicule à propulsion humaine, tel qu'un vélo. Contrairement aux systèmes de changement de vitesse automatique précédents qui reposent uniquement sur une combinaison de vitesse par moyeu et/ou une vitesse par bras de manivelle, ce système crée une image virtuelle de la totalité de l'environnement de fonctionnement de l'utilisateur à l'aide d'une combinaison de mesures de vitesse par moyeu, de vitesse par bras de manivelle, d'inclinaison et d'accélération. Grâce à ces informations, le système est en mesure de comprendre le couple de sortie et la vitesse et, par l'intermédiaire de la commande de la transmission, de changer le « rapport de vitesse » de manière à obtenir une condition de fonctionnement davantage souhaitée en fonction des préférences de chaque utilisateur. De plus, ce système est conçu de manière à fonctionner également avec une transmission à variation continue afin d'éviter l'insuffisance des systèmes de l'état de la technique, qui ne peuvent se situer qu'à l'intérieur d'une large plage de la cadence optimale en raison des rapports fixes d'un système de dérailleur. (Ci-après, le terme « rapport de vitesse » sera utilisé à la fois pour les rapports de vitesse réels sur les systèmes à base de dérailleur et les rapports de vitesse artificiels lorsqu'ils sont utilisés avec des transmissions à variation continue).
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